package aug08;

public class Ex3 {
	public static void main(String[] args) {  
		int k = 0;
		for(int i =1; i < 5; i++){
			for(int j = 1; j <= i ; j++){
				k+=j;
				System.out.print(k + "\t");
				}
			System.out.println();
			}
	}

}
